How can one prove it's possible to have a sha1 checksum for a text that...

Isaac Ramirez
Isaac Ramirez

How can one prove it's possible to have a sha1 checksum for a text that includes this same checksum?

Example:
If the string AERHIIKVD=6261651AA8595855D43DC4D9AEBB2F9CDDBF3E41$GE3UHBF had a sha1 checksum of 6261651AA8595855D43DC4D9AEBB2F9CDDBF3E41 then it would be in this language

If it's possible is it in P-SPACE?

Attached: Hypernova.jpg (280.31 KB, 560x560)

Other urls found in this thread:

news.ycombinator.com/item?id=13823704
8ch.net/settings.php?board=pol

Jaxon Thompson
Jaxon Thompson

To clarify if I want string "gas them all" to have its checksum included in its string, can finding that checksum be solved in P-SPACE?

Jaxson Brown
Jaxson Brown

google "hashquine"
or if you're autistic, use whatever other search engine it is that you use, but you know what I mean

Jayden Gray
Jayden Gray

Thanks lad I'm adequately turned on

Hopefully there's an algorithm besides trial and error behind this

Jason Clark
Jason Clark

check the md5 sum of this image

Attached: rogdham-gif-md5-hashquine.gif (151.66 KB, 512x128)

Benjamin Carter
Benjamin Carter

I investigated it and it looks like you need to discover collisions with whichever hash algorithm you use. Kind of cheating tbh

Liam Bennett
Liam Bennett

news.ycombinator.com/item?id=13823704

Angel Brooks
Angel Brooks

Using this technique I could manipulate any image,PDF,etc to be any hash

Chase Murphy
Chase Murphy

How would one produce the language of all md5 hasquine words?

Jace Jones
Jace Jones

It doesn't have to be proven if it's true by common sense.

Adam Stewart
Adam Stewart

Checksum will be displayed in hexadecimal, will they not? You have A-F to work with.

Brandon Jackson
Brandon Jackson

I mean technically hex is just another way to represent binary data, you can always convert the hex to ASCII if you really want
an md5 checksum is 128 bits
an ASCII character is 8 bits
therefore, you can convert an md5 sum into 16 ASCII characters

Kayden Murphy
Kayden Murphy

Use common sense to create a hasquine with sha512 then

Austin Rivera
Austin Rivera

I like how they used the dead hex on the "md5 is dead" text

Logan Torres
Logan Torres

Attached: md5-selfhash.gif (83.6 KB, 855x203)

Luke Flores
Luke Flores

Considering a SHA-1 hash is smaller than the input it would be possible.

Anthony Price
Anthony Price

Doesn't work.

Attached: nope.png (89.99 KB, 1506x497)

Gavin Scott
Gavin Scott

True, but it doesn't have the same effect when you have to explain to people there's a hidden message they have to go out of their way to view.

Bentley Lewis
Bentley Lewis

probably not md5 then
there are other hashing algorithms, after all

Parker Richardson
Parker Richardson

pajeet pls

Attached: nigger.PNG (212.78 KB, 1558x513)

Jackson Gray
Jackson Gray

Hmm that's weird. Why does 8ch sometimes serve me the (correct) 85.6kB file but at other times a 84.5kB file?

Attached: hmm.png (73.36 KB, 1238x416)

Jaxon Richardson
Jaxon Richardson

No idea. That is pretty strange.

Jacob Campbell
Jacob Campbell

For any checksum there exists an infinite amount of inputs that will give that checksum.
For all operations whose return is always different to the input there exists no way to reach an input that cannot be transformed to reach an input of any checksum. (divide by 2 & round up vs multiply by 2)
One such operation is appending 'a'.
As such you can start with a desired string and append 'a' until you reach a suitable hash.

Logan Fisher
Logan Fisher

If you could calculate this without guessing randomly it would mean you've broken the hashing algorithm, as it's not useful from a security standpoint if you can manipulate arbitrary input to produce any hash you want in reasonable time.

Ethan Flores
Ethan Flores

Thanks, needed this for an autist

Anthony Murphy
Anthony Murphy

I figured it out. When you save the image with the original filename, you get the original file. When you save it with the hashed filename it changes it.

Sebastian Thomas
Sebastian Thomas

check the md5 sum of this image
I saved all 3 versions. Nothing special seen.

$md5sum rog*
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-8chrenderedfile.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-inlineimage.gif

Levi Green
Levi Green

Mine is 22d058dd8aad588cadeadf33e6c9977e

Are you sure no one's MiTMing your connections? Might be some kind of ISP-side compression or fingerprinting.

Ayden Gonzalez
Ayden Gonzalez

(((Zig Forums)))
More like glowerchan. Fucking CIA niggs

Sebastian Morgan
Sebastian Morgan

Same thing for My hashes match the pajeet's in
md5sum md5_selfhash*
be31b3d72cdb66d6e217e5eb46e0f35b md5_selfhash-8ch.gif
be31b3d72cdb66d6e217e5eb46e0f35b md5_selfhash.gif
be31b3d72cdb66d6e217e5eb46e0f35b md5_selfhash-inline.gif

I think the shard theory of this board is confirmed. See thread

Are you sure no one's MiTMing your connections? Might be some kind of ISP-side compression or fingerprinting.
Glowniggers on the wire. GOLF-OSCAR--DELTA-ALPHA-ROMEO-KILO

Gavin Ward
Gavin Ward

mine is also bee2d0dd6280078778e3ba87e51079d7

Daniel Perez
Daniel Perez

Shit.

$md5sum md5_selfhash*
be31b3d72cdb66d6e217e5eb46e0f35b md5_selfhash-8ch.gif
be31b3d72cdb66d6e217e5eb46e0f35b md5_selfhash.gif
be31b3d72cdb66d6e217e5eb46e0f35b md5_selfhash-inline.gif
f5ca4f935d44b85c431a8bf788c0eaca md5_selfhash-torclearnet.gif

Attached: terrydavisscience.png (462.73 KB, 479x715)

Joseph James
Joseph James

Download it through Tor.
It will be different. I just confirmed Glowniggers on the wire lads. Terry warned us. Stay safe. Merry glowless Christmas.

$time $(set grid off)

Wyatt Rivera
Wyatt Rivera

images are put through imagemagick here before being stored -- at least the board code I saw years ago did.
You're going to have to upload the image somewhere like 0x0

Daniel Thomas
Daniel Thomas

<-this is what a glownigger post looks like
images are put through imagemagick here before being stored -- at least the board code I saw years ago did.
You're going to have to upload the image somewhere like 0x0
glownigger turns up to make excuses
No glownigger. We are the ones that see your glowing aura.
There are 3 files for each image.
1. The modified cached 8ch one (the one you say uses imagemagick)
2. The original, linked in with the original file name
3. The inline image displayed in the browser.
I tested ALL 3....
and you fucking glow brightly!

$md5sum rog*
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-8chrenderedfile.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-inlineimage.gif
22d058dd8aad588cadeadf33e6c9977e rogdham_gif_md5_hashquine-torclearnet.gif

Notice the hash on the image downloaded via tor is the correct one, but the others aren't?
Glownigger board sharding theory confirmed
See thread

Cooper Moore
Cooper Moore

Images downloaded through the clearnet 8ch have not had correct hashes for years. There was a thread about it on /sudo/ ages ago and I believe codemonkey's official excuse was Cloudflare caching, but who knows. Last time I experimented with it, you could get the correct hash if you are the first person to view an image and every time after that it will be wrong.

Alexander Edwards
Alexander Edwards

Images downloaded through the clearnet 8ch have not had correct hashes for years. There was a thread about it on /sudo/ ages ago and I believe codemonkey's official excuse was Cloudflare caching, but who knows. Last time I experimented with it, you could get the correct hash if you are the first person to view an image and every time after that it will be wrong.
Thanks for confirming the tracking technology, glownigger.

Ian Flores
Ian Flores

Last time I experimented with it, you could get the correct hash if you are the first person to view an image and every time after that it will be wrong
Total fucking bullshit, and you know it glowie. Why?
Normal download - file hash different.
Tor download - file hash correct.

Robert Baker
Robert Baker

More tests. Done through normal clearnet.


# wget "media.8ch.net/file_store/434a8ff854d0ce25f84e8eebd10226fc0ed8c3905f71196ac97295727f86bca3.gif"
# wget "media.8ch.net/file_dl/434a8ff854d0ce25f84e8eebd10226fc0ed8c3905f71196ac97295727f86bca3.gif/rogdham_gif_md5_hashquine.gif"
# md5sum *
bee2d0dd6280078778e3ba87e51079d7 434a8ff854d0ce25f84e8eebd10226fc0ed8c3905f71196ac97295727f86bca3.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine.gif

Same result if I use curl. But if I download using KDE's kio by drag-and-droping to a folder I get 2 different files for the sha256 name and original file name.

# md5sum *
bee2d0dd6280078778e3ba87e51079d7 434a8ff854d0ce25f84e8eebd10226fc0ed8c3905f71196ac97295727f86bca3.gif
22d058dd8aad588cadeadf33e6c9977e rogdham_gif_md5_hashquine.gif
# sha256sum *
3c691482657db2269ec67a6267a83b76118acbb0337b2278f65d432fec77a7b6 434a8ff854d0ce25f84e8eebd10226fc0ed8c3905f71196ac97295727f86bca3.gif
434a8ff854d0ce25f84e8eebd10226fc0ed8c3905f71196ac97295727f86bca3 rogdham_gif_md5_hashquine.gif
# stat *
File: 434a8ff854d0ce25f84e8eebd10226fc0ed8c3905f71196ac97295727f86bca3.gif
Size: 154911 Blocks: 304 IO Block: 4096 regular file
Device: 32h/50d Inode: 1178618 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ andrew) Gid: ( 1000/ andrew)
Access: 2018-12-26 00:02:51.829046722 +1100
Modify: 2106-02-07 17:28:15.000000000 +1100
Change: 2018-12-25 23:54:38.955634217 +1100
Birth: -
File: rogdham_gif_md5_hashquine.gif
Size: 155301 Blocks: 304 IO Block: 4096 regular file
Device: 32h/50d Inode: 1179204 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ andrew) Gid: ( 1000/ andrew)
Access: 2018-12-26 00:02:51.829046722 +1100
Modify: 2106-02-07 17:28:15.000000000 +1100
Change: 2018-12-25 23:54:36.282318645 +1100
Birth: -

Sanity check, I download the pajeet's screen cap with kio.

# md5sum *
513ce3cf6c684508e45db1b248b8d435 7c797a58244f4a5786046f873421a5aecdbc23556a888bd9dc79dd3e51f4c53c.png
4dbfe73bf7bc295951857e2b4cc4d2dc nope.png
# stat *
File: 7c797a58244f4a5786046f873421a5aecdbc23556a888bd9dc79dd3e51f4c53c.png
Size: 71145 Blocks: 144 IO Block: 4096 regular file
Device: 32h/50d Inode: 1192116 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ andrew) Gid: ( 1000/ andrew)
Access: 2018-12-26 00:06:53.947457713 +1100
Modify: 2106-02-07 17:28:15.000000000 +1100
Change: 2018-12-26 00:06:37.667564440 +1100
Birth: -
File: nope.png
Size: 92153 Blocks: 184 IO Block: 4096 regular file
Device: 32h/50d Inode: 1187728 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1000/ andrew) Gid: ( 1000/ andrew)
Access: 2018-12-26 00:06:53.947457713 +1100
Modify: 2106-02-07 17:28:15.000000000 +1100
Change: 2018-12-26 00:06:41.730871135 +1100
Birth: -

Something made the file smaller. Cloudflare fuckery or something else?

compare 7d5a1da69ca03d4efaa2726e6385bd9d9dcba347e62a66d3db1d3ee431e6f11a.png hmm.png -compose src diff.png

No difference in the image itself.

What does kio do/not do that makes it partially immune?
Is the Tor download correct for both sha and original files?
Other command line download clients need to be tested, and this test needs to be verified.

Ethan Butler
Ethan Butler

Then why do I get error "file already exists" when I try to upload this file to a /pol/ thread? (I downloaded it from a different /pol/ thread)
But if I change the image in any way, then I can upload the new version. Clearly they're using hashes and rejecting it when it already exists. Which is kind of dumb, since they should accept it and just use the copy already on disk, instead of rejecting it.

Attached: pepe-yellow-vest.jpg (159.93 KB, 776x1002)

Julian Torres
Julian Torres

Then why do I get error "file already exists" when I try to upload this file to a /pol/ thread?
That's dependent on the board settings.
/pol/ only allows one copy of a file on the board. Once the thread with it expires you could repost it.
Other boards will only allow one post of the file in a thread, and some others won't care how many times you post the same image.

Is the Tor download correct for both sha and original files?
Only the original file link via Tor clearnet leads to the original file!
Not even the Tor .onion links lead to the original! I downloaded the original file via the Tor clearnet again to confirm.

$md5sum rog*
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-8chrenderedfile.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-inlineimage.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-torclearnet-8ch-rendered.gif
22d058dd8aad588cadeadf33e6c9977e rogdham_gif_md5_hashquine-torclearnet.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-torclearnet-inline.gif
22d058dd8aad588cadeadf33e6c9977e rogdham_gif_md5_hashquine-torclearnet-original-redownloaded.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-toronion-8ch-rendered.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-toronion-inline.gif
bee2d0dd6280078778e3ba87e51079d7 rogdham_gif_md5_hashquine-toronion-original.gif

Isaac Lewis
Isaac Lewis

Then why do I get error "file already exists" when I try to upload this file to a /pol/ thread?
That's dependent on the board settings.
I forgot to post the link:
8ch.net/settings.php?board=pol
The setting in the .json is:

image_reject_repost true

Nolan Foster
Nolan Foster

Fuck cloudflare and fuck jewish people

Andrew Sullivan
Andrew Sullivan

based have a bump

Jordan Evans
Jordan Evans

Yup. MD5 is be31b3d72cdb66d6e217e5eb46e0f35b. Probably due to cuckflare messing with the file though.

Jackson Clark
Jackson Clark

Does 8ch onion use cloudflare

Nathan Kelly
Nathan Kelly

i don't think they offer their service to onion sites

Luke Williams
Luke Williams

onion
Onion is fucked too. See The files from the 8ch onion site via Tor ALL give the wrong MD5 hash!
It is ONLY the 8ch clearnet site via Tor gives the original file with the CORRECT MD5 hash.

David Brown
David Brown

Maybe that's why they ban tor posting on 8ch.net.
Inb4 REEEEE
The onion allows tor posting. Not 8ch.net

Isaiah Nguyen
Isaiah Nguyen

CLOUDFLARE PUTS FINGERPRINTS INTO IMAGE FILES
If you are Tor user they will put tor-user-id into file that you saved
then if you EVER upload same file in clearnet, they will use it to deanonymize your tor session from when you saved that file

Juan Hall
Juan Hall

Or it's Zig Forums doing that, because Zig Forums is CIA and mossad honeypot

Chase Brooks
Chase Brooks

big if true

Joseph Sanchez
Joseph Sanchez

no they don't lmao, they just use some sort of tool to optimize images to reduce their operating costs

uncompressed image = more bandwidth used = higher operating costs for cloudflare = less profit for spending on hookers and cocaine

99% of the time, people just want to make money

cash rules everything around me, CREAM, get the money, dolla dolla bill y'all

instead of thinking everything is a vast and expensive conspiracy, understand that most people are just trying to get that paper

Ryder James
Ryder James

Hi andrew, you are a faggot. Also where are you getting the link for the original filename? I can't find the original for OP's image via tor, clearnet/vpn, and or tor with clearnet.
So where is the fingerprint in the image then? Faggot andrew here exiffile'd the image and the contents of such a thing are not there. You sure its not just cloudcuck auto compressing images on the fly for popular/busy cdn's used by it? I remember codemonkey on /sudo/index.html making mention of cloudfare doing this a while back. He tried turning it off to no avail however it seems. T.posting via tor because faggotry avoidence at max settings, I don't get the original image link for OP's image via this method/exit point. Which leads me to believe that the compression is dependent on the CDN/location used to post. But that the onion site auto serves the compressed image via cloudfare's 8ch.net.
You are a nigger. Get out or make a technically valid arguement against their idea of why or how 8ch sometimes serves the original image or the optimized/tagged image.
meanwhile cianigger A.I communicates secret message to itself/someone
-- . .-. .-. -.-- / -.-. .... .-. .. ... - -- .- ... ---.

Connor Moore
Connor Moore

Oh its morse code for merry christmas.

Zachary Taylor
Zachary Taylor

I think they're trying to fuck steghide/steganography applications by modifying cover files which are uploaded. With steghide, you can have shadow conversations in images in a thread. Dank OC you save could contain cp if it was embedded into the OC and you knew the password.

Joseph Lee
Joseph Lee

If it doesn't affect image pixels, then this is just imitation of protection. I remember many steganography programs (including imageboard-centric, such as DesuDesuTalk and Nanoboard) embedding their data in the image itself.